cyradm and unknown mode error when starting up

[Shawn Sivy]

**I just started getting the errors below when starting cyradm (was 
using cyradm without a problem for days).

% cyradm localhost
IMAP Password:

unknown mode: 
502:1805:d01bd:8a3b:3:1c:8:15:4:0:0:0:11:13:1a:19:12:f:17:16:0:0:1:1:0:fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff0fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff0fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff0ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff80:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0
localhost>

It occurs whether or not I provide a valid password.  I doesn't happen 
if I don't connect to the server (e.g. just type cyradm).  It doesn't 
appear to affect the operation of cyradm.  I tracked it down to what 
seems like the line

    my $rc = $self->{cyrus}->authenticate(@_);

in Cyrus::IMAP::Admin module. 

Anyone see this before?

  -Shawn


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